let arr = [
  {
    geom: "SRID=4326;MULTIPOLYGON(((121.435734970519 28.3728881782164,121.435858090602 28.3721832082918,121.435868530609 28.3714613183045,121.434702849836 28.3711140976665,121.434793209895 28.3710384077162,121.434766569878 28.3690467977201,121.434235209533 28.36874)))",
    province: "浙江省",
    city: "台州市",
    country: "温岭市",
    name: "城东街道",
    code: "331081002",
    centroid: [121.40187765784061, 28.404361921934353],
  },
  {
    geom: "SRID=4326;MULTIPOLYGON(((121.435734970519 28.3728881782164,121.435858090602 28.3721832082918,121.435868530609 28.3714613183045,121.434702849836 28.3711140976665,121.434793209895 28.3710384077162,121.434766569878 28.3690467977201,121.434235209533 28.36874)))",
    province: "浙江省",
    city: "台州市",
    country: "温岭市",
    name: "城西街道",
    code: "331081002",
    centroid: [121.40187765784061, 28.404361921934353],
  },
];
//处理成如下所示
let obj = {
  三门峡市: [111.181262093, 34.7833199411],
  信阳市: [114.085490993, 32.1285823075],
};

